- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98055 > PM6680A (STMICROELECTRONICS) 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32 PDF資料下載
參數(shù)資料
| 型號： | PM6680A |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32 |
| 封裝： | 5 X 5 MM, LEAD FREE, VFQFPN-32 |
| 文件頁數(shù)： | 20/48頁 |
| 文件大?。?/td> | 1932K |
| 代理商： | PM6680A |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁當(dāng)前第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁
PM6680A
Device description
27/48
7.9
Reference voltage and bandgap
The 1.237 V (typ.) internal bandgap voltage is accurate to ±1 % over the temperature range.
It is externally available (VREF pin) and can supply up to ± 100 A and can be used as a
voltage threshold for the multifunction pins FSEL and SKIP to select the appropriate working
mode. Bypass VREF to ground with a 100 nF minimum capacitor.
If VREF goes below 0.87 V (typ.) , the system detects a fault condition and all the circuitry is
turned off. A toggle on the input voltage (power on reset) or a toggle on SHDN pin is
necessary to restart the device.
An internal divider of the bandgap provides a voltage reference Vr of 0.9 V. This voltage is
used as reference for the linear and the switching regulators outputs. The overvoltage
protection, the undervoltage protection and the power good signals are referred to Vr.
7.10
Internal linear regulator
The PM6680A has an internal linear regulator providing 5 V (LDO5) at ± 2 % accuracy. High
side drivers, low side drivers and most of internal circuitry are supplied by LDO5 output
through VCC pin (an external RC filter may be applied between LDO5 and VCC). The linear
regulator can provide an average output current of 50 mA and a peak output current of 100
mA. Bypass LDO5 output with a minimum 1F ceramic capacitor and a 4,7 F tantalum
capacitor ( ESR ≥ 2
). If the 5 V output goes below 4 V, the system detects a fault condition
and all the circuitry is turned off. A power on reset or a toggle on SHDN pin is necessary to
restart the device.
V5SW pin allows to keep the 5 V linear regulator always active or to enable the internal
bootstrap-switchover function: if the 5 V switching output is connected to V5SW, when the
voltage on V5SW pin is above 4.8 V, an internal 3.0
max p-channel MOSFET switch
connects V5SW pin to LDO5 pin and simultaneously LDO5 shuts down. This configuration
allows to achieve higher efficiency. V5SW can be connected also to an external 5 V supply.
LDO5 regulator turns off and LDO5 is supplied externally. If V5SW is connected to ground,
the internal 5 V regulator is always on and supplies LDO5 output
Table 7.
V5SW multifunction pin
V5SW
Description
GND
The 5 V linear regulator is always turned on and supplies LDO5 output.
Switching 5 V
output
The 5 V linear regulator is turned off when the voltage on V5SW is above 4.8 V and
the LDO5 output is supplied by the switching 5 V output.
External 5 V
supply
The 5 V linear regulator is turned off when the voltage on V5SW is above 4.8 V and
LDO5 output is supplied by the external 5 V.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PM6680TR | 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32 |
| PM6685TR | DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32 |
| PM6686 | SWITCHING CONTROLLER, QCC32 |
| PM75B6L1C060 | AC MOTOR CONTROLLER, DMA19 |
| PMB2304T | PLL FREQUENCY SYNTHESIZER, 220 MHz, PDSO14 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PM6680ATR | 功能描述:DC/DC 開關(guān)控制器 Dual sync controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| PM6680TR | 功能描述:DC/DC 開關(guān)控制器 No Rsense dual StepDwn Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| PM6681A | 功能描述:DC/DC 開關(guān)控制器 Dual Synch CTRLR Adj Voltage LDO RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| PM6681A_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual synchronous step-down controller with adjustable LDO |
| PM6681ATR | 功能描述:DC/DC 開關(guān)控制器 DUAL STEP-DOWN CONTROLLER W/ADJ LDO RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。